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T ECHNICAL INFORMATION
Models No. 6796D/FD, 6797D/FD, 6798D/FD L
PRODUCT
P 1 / 12
Description 9.6 V Cordless screwdriver
CONCEPTION AND MAIN APPLICATIONS
The series of the above cordless screwdrivers have been developed
for automobile assembling line where the precise fastening torque
is required. H
The precise fastening torque thanks to
* Battery power warning lamp
* Auto stop when continuous operation disregarding the
above warning.
The easy and comfortable working thanks to W
* Palm fitting soft grip
* Lighting up front lamps for easy approach to Dimensions : mm ( " )
the screwing point in dark. (only FD models) Length ( L ) 174 (6-27/32)
Height ( H ) 240 (9-7/16)
Width ( W ) 58 (2-9/32)
Specification
Model No. 6796D/DF 6797D/DF 6798D/DF
Cell Ni-Cd Ni-Cd Ni-Cd
Battery Voltage 9.6 9.6 9.6
Capacity 2.0 2.0 2.0
No load speed : (min -1= rpm) 320 320 320
Driving shank : mm ( " ) 6.35 (1/4) Hex 6.35 (1/4) Hex 6.35 (1/4) Hex
N.m 1-5 2-8 6 - 12
Fastening torque Kgf.cm 10 - 51 20 - 82 61 - 122
in.lbs 8.9 - 44 18 - 71 53 - 106
Electric brake Yes Yes Yes
Reverse switch Yes Yes Yes
* Net weight : Kg (lbs) 1.4 (3.1) 1.4 (3.1) 1.4 (3.1)
* Net weight : including battery
Optional accessories
* Various philips bits * Battery 9100 * Charger DC1411
* Various socket bits * Battery 9102 * Charger DC1801
* Bit piece * Battery 9102A * Automotive charger DC1422
* Protector * Fast charger DC1439 * Adjust grip for pre-setting of torque
Features and benefits P 2 / 12
6796D, 6796FD 6797D, 6797FD 6798D, 6798FD
It is very convenient to operate them in trio in your assembling lines where the various fastening torque
is precisely required. Their fastening torque ranges are listed below, and can be distinguished with aluminum plates on
their rear head of motor housing.
Model No. Fastening torque range Lighting up front lamps Color of aluminum plate
6796D 1 - 5 N.m No
10 - 51 Kgf.cm Yellow
6796FD 8.9 - 44 in.lbs Yes
6797D 2 - 8 N.m No
20 - 82 Kgf.cm Blue
6797FD 18 - 71 in.lbs Yes
6798D 6 - 12 N.m No
61 - 122 Kgf.cm Red
6798FD 53 - 106 in.lbs Yes
The precise fastening torque More compact body in length and weight
Conforming to "FIAT" B-standard. compared with competitors
MAKITA, 6796D series :174mm / 1.4 Kg
Competitor A, Mod.A series : 225mm / 1.8 kg
Special structure for pre-selection
Competitor B, Mod.B series : 203mm / 1.6 kg
of fastening torque
Impossible to pre-select the fastening Torque gauge showing desired Auto stop synchronizing
torque without adjust grip, in order to torque by one of the numbers with clutch
prevent spontaneous pre-selection from 1 to 12.
during the work, which can be cause
of dispersion of torque. Externally accessible brush
"Adjust Grip" is optional accessory. 174mm
Colored aluminum plate
for distinction of the torque
Adjust Grip range and model number.
Sleeve coated with rubber
to protect the work piece Battery power warning lamp
from scratch, etc. Auto stop by sensing battery's
power drop
Lighting up front lamps when continuous operation
(only for FD models) disregarding the warning by lamp
The lamps are on with pulling
switch trigger, and off 10 - 20 sec. Palm-fitly soft grip
after releasing switch trigger.
Push button type
ON-OFF switch with big reverse switch
trigger for easy operation 9.6V set plate type battery
conveinent to work in narrow
Body is assembled with machine place because of no side-bulge.
screws for convenience of repairing
or maintenance. Rubber protector for protection
of the work piece from scratch, etc.
(Optional accessory)
Comparison of products P 3 / 12
Model No. MAKITA Competitor A Competitor B
6796D 6797D 6798D
6796FD 6797FD 6798FD 6795D 6794D 6793D A-1 A-2 B-3 B-6 B-9
Specifications
Voltage ( V ) 9.6 9.6 12 9.6
* (1.3 / 2.0) * (1.3 / 2.0) * (1.25 / 2.0) 1.4 / *(2.0)
Battery
Capacity( Ah )
Energy ( Wh) * (12.5 / 19.2) * (12.5 / 19.2) * (15.0 / 24.0) 13.4 /* (19.2)
Set plate
Push button
Fastening 0.5 - 1.9 - 1.9 - 1.0 - 4.0- 0.9 -
1-5 2-8 6 - 12 1.9 -7 3 -10
torque : N.m 3.4 7.8 11.8 4.5 8.0 4.5
No load speed
320 1,700 650 400 850 600 800 520 360
:(min -1= rpm)
Driving shank
6.35 (1/4") Hex 6.35 (1/4") Hex 6.35 (1/4") Hex 6.35 (1/4") Hex
: mm ( " )
Battery warning
Yes No No Yes
lamp
Auto stop by
Yes Yes Yes Yes
Synchronizing
informing with informing with
with clutch
lamp click and lamp
Battery-power
Yes No No Yes
drop sensor
Lighting up D model : No
No No No
front lamps FD model : Yes
Replacing
Yes No No No
carbon brush
Adjusting by Pre-selection Screwdriver with
by Adjust grip by Adjust grip
torque dial particular bit
Reverse switch A type B type A type A type
Center 28 29
28 28.5
height : mm
All over length
: mm 174 178 183 183 225 203
Net weight (Kg) 1.4 1.5 1.4 1.4 1.8 1.6
Reverse switch
A-type B-type
Push button type on the Slide lever type on the
side of body upper side of machine
< Note > * Batteries in ( ) are optional accessories, in stead of standard equipments.
Repair P 4 / 12
< 1 > Disassembling sleeve section
Disassemble ring spring 10 with retaining ring plier from the groove of spindle. Then flat washer 11,
compression spring 13 and sleeve can be removed from spindle as illustrated in Fig. 1.
Ring spring 10 Flat washer 11 Sleeve Spindle
Compression spring 13
Fig. 1
< 2 > Separating DC motor from gear section
Hold gear section and turn DC motor anti-clockwise as illustrated in Fig.2. So, DC motor can be removed
from gear assembly.
Gear section
Gear case Gear case
DC motor complete Gear case A DC motor
complete Gear case A
Fig. 2
< 3 > Disassembling gear section
(1) Turn the lock washer anti-clockwise with screwdriver hitched into any of its two punched holes.
Then, the lock washer can be separated from gear case A by pulling out with the screwdriver
as illustrated in Fig. 3.
Lock washer Lock washer
Fig. 3
(2) Remove the following parts from gear case A as illustrated in Fig. 3A.
* Spur gear 17 x 3 pcs.
* Spur gear 15 complete (with 3 shafts)
* Spur gear 10 x 5 pcs.
* Spur gear 15 complete (with 5 shafts) Spur gear 10 x 5 pcs. Spur gear 17 x 3 pcs.
Gear case A
Spur gear 15 complete Spur gear 15 complete
(with 4 shafts) (with 3 shafts)
Fig. 3A
Repair P 5 / 12
(3) Take off 4 pcs. of tapping screws M3 x 12. And separate gear case A from gear case complete
as illustrated in Fig. 3B.
Tapping screws
M3 x 12
Fig. 3B
Gear case complete Gear case A
(4) Remove the following parts from gear case A as illustrated in Fig. 3C.
* Flat washer 18
* Steel ball 3 x 38 pcs. Steel ball 3 Flat washer 18
* Internal gear 35
Carrier
* Spur gear 10 x 5 pcs.
* Carrier ( with 5 shafts)
Spur gear 10
Internal gear 35 Gear case A
Fig. 3C
< Note > 38 pcs. of steel balls 3 are assembled. Check the quantity of them, when assembling.
< 4 > Disassembling switch
(1) Unscrew the screw fastening micro switch, and turn the micro switch with pulling it up as illustrated in Fig. 4.
Then, micro switch can be separated from switch.
Micro switch
Fig. 4
Screw, fastening Turn the micro switch in
micro switch with the direction of the colored
fastening torque arrow with pulling it up.
0.29 - 0.34 N.m
Repair P 6 / 12
< 4 > Assembling spring holder section
Assemble spring holder by turning it clockwise at least 4 turns as illustrated in Fig. 4.
Spindle Turn clockwise at least 4 turns.
Compression spring 30 for 6796D / 6796FD ..... Gold
for 6797D / 6797FD ..... Silver
Gear case for 6798D / 6798FD ..... Gun metal
Torqueup Fig. 4
plate
Spring holder for 6796D / 6796FD marked with "1 - 5 Nm "
for 6797D / 6797FD marked with "2 - 8 Nm "
for 6798D / 6798FD marked with "6 - 12 Nm "
Spring holder and compression spring 30 to be assembled to spring holder section are distinguished
as mentioned above.
Be careful not to assemble them to the wrong model.
< 5 > Assembling and adjusting switch unit
Adjust the switch unit's position against torqueup plate by sliding holder plate, so that the gap between
torqueup plate and switch unit comes to 1.4 + - 0.2mm as illustrated in Fig. 5A.
No.1R289 Adjusting jig is required for this work. After the adjusting, fix holder plate to which switch unit is
assembled, on gear case complete.
Loosen this screw, so the holder plate
can be adjusted within its elliptic hole.
Elliptic hole
for adjusting Fastening torque : 0.2 - 0.3N.m
Boss of gear case complete
Holder plate for fixing holder plate
Torqueup plate 1.4+ - 0.2mm
Switch unit "ON" point with a click
No.1R289 Adjusting jig
View from switch unit side
Fig. 5 Fig. 5A
Repair P 7 / 12
< 6 > Assembling cam section
(1) Assemble the following parts to gear case A as illustrated in Fig. 6A.
* Flat washer 18 Flat washer 18
Steel ball 3
* Steel ball 3 x 38 pcs.
* Internal gear 35 Carrier
* Spur gear 10 x 5 pcs.
* Carrier ( with 5 shafts)
Spur gear 10
Internal gear 35 Gear case A
< Note > 38 pcs. of steel balls 3 are assembled. Check the quantity of them, when assembling.
Fig. 6A
(2) Assemble the gear case A to which the above 5 parts have been assembled, to gear case complete
by fastening with 4 taping screws as illustrated in Fig. 6B.
Tapping screws
M3 x 12
Fig. 6 B
Gear case complete Gear case A
(3) Assemble the gears to gear case A as illustrated in Fig. 6C, and assemble lock washer as illustrated in Fig. 6D.
Spur gear 10 x 5 pcs. Spur gear 17 x 3 pcs.
Gear case A Spur gear 15 complete Spur gear 15 complete Lock washer
(with 5 shafts) (with 3 shafts)
Fig. 6 C Fig. 6 D
4) Insert 3 pcs. of steel balls 5 into the 3 holes of gear case complete, and then insert 3 pcs. of pin 5.0 into
the same holes as illustrated in Fig. 6E.
Spindle
Steel ball 5 x 3 pcs. Pin 5.0 x 3 pcs.
Gear case complete
Gear case A
Fig. 6E
Repair P 8 / 12
< 7 > Lubrication
Apply MAKITA grease N No.2 to the parts marked with black triangle illustrated in Fig. 7.
Approx. 0.5g
Steel ball 3
Approx. 0.5g
Spindle
Shaft of
carrier
Spur gear 10
Approx. 0.5g
Approx. 0.5g
Spur gear 15 complete
Spur gear 10
Spur gear 15 complete
Spur gear 17
Fig. 7
Circuit diagram P 9 / 12
Color index
Black Model 6796D / 6797D / 6798D
(without lighting up feature)
White
Red
Yellow Shrink these tubes by heat. Switch
Orange
Blue NO
Purple
NC
Gray
COM
Battery holder Micro switch
T S1 M1
Controller S2
DC. motor
T
M2 M2
Reverse switch
Receptacle sleeve
NO
Switch unit
COM
Connector
Shrink these tubes by heat. Switch
Model 6796FD / 6797FD / 6798FD NO
(with lighting up feature)
NC
COM
Battery holder Micro switch
T S1 M1
Controller S2
DC. motor
T
M2 M2
Reverse switch
Receptacle sleeve
NO
Switch unit
Connector COM
LED circuit complete
(Circuit for lighting up feature)
Wiring diagram P 10 / 12
For model 6796D, 6797D, 6798D
6796FD, 6797FD, 6798FD
(1 ) Connecting to switch
Connect lead wires and receptacles to switch as illustrated in Fig. 8, and fix them with lead holder.
Motor lead
Red Blue
wire Controller
lead wire
Purple Black
Motor lead wire
Controller White
lead wire Controller lead wire
Orange Lead holder.
Controller
Controller lead wire
lead wire Red
White View from another side
View from micro switch side
Fig. 8
(2 ) Connecting to battery holder
Connect the flag type receptacle equipped with receptacle sleeve, as illustrated in Fig. 9.
Black
Controller
lead wire
Red Battery holder
Red
Receptacle sleeve
Fig. 9
Wiring diagram P 11 / 12
Fix motor lead wire
Wiring in motor housing with lead holder.
Model 6796D/ 6797D/ 6798D
Switch unit
DC motor
Controller
Switch
Put the slack portion of
lead wires as illustrated
above, after connecting
switch unit's connector
to controller.
Pass motor lead wire on both
Attach receptacles so that the pin for side of the LED portion of
prevention of short circuit comes to controller.
between the receptacle sleeves.
Pass lead wires between receptacle sleeve.
Pin for prevention of
short circuit Receptacles
assembled
Receptacle to switch Ribs of switch
sleeves Rib of motor housing
Lead wires
Pass lead wires which come through
Battery holder the rear side of switch, between
the ribs of switch and motor housing.
Wiring diagram P 12 / 12
Fix motor lead wire
Wiring in motor housing with lead holder.
Model 6796FD/ 6797FD/ 6798FD
Switch unit
LED circuit
DC motor
Controller
Switch
Put the slack portion of
lead wires as illustrated
above, after connecting
switch unit's connector
and LED circuit's connector
to controller.
Pass motor lead wire on both
Attach receptacles so that the pin for side of the LED portion of
prevention of short circuit comes to controller.
between the receptacle sleeves.
Pass lead wires between receptacle sleeve.
Pin for prevention of
short circuit Receptacles
assembled
to switch Ribs of switch
Receptacle
sleeves Rib of motor housing
Lead wires
Pass lead wires which come through
the rear side of switch, between
Battery holder
the ribs of switch and motor housing.